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Rep:Re: [f-cpu] Conditionnal Load and Store
- To: <f-cpu@seul.org>
- Subject: Rep:Re: [f-cpu] Conditionnal Load and Store
- From: "Nicolas Boulay" <nicolas.boulay@ifrance.com>
- Date: Fri, 26 Jul 2002 14:34:12 GMT
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- Delivery-Date: Fri, 26 Jul 2002 10:34:24 -0400
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To be as "clean" as possible, does we need to handle everywhere the same
test ? I think so.
z/nz/MSB/LSB 4 opcodes and where is the other 4 ?
nicO
-----Message d'origine-----
De: jaap stolk <jwstolk@yahoo.com>
A: f-cpu@seul.org
Date: 26/07/02
Objet: Re: [f-cpu] Conditionnal Load and Store
--- Cedric BAIL <cedric.bail@free.fr> wrote:
> Why didn't we have conditionnal load and store. I
- snip -
> but it will cost 8 OP codes for load
> and 8 more OP codes for store.
or as a compromize, only check for z/nz,
and not MSB,LSB,etc. that will cost only 1 exta
opcode for load and 1 extra for store.
(unconditional load/store -> check r0 for zero)
jaap.
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